Over the top $\text{(OTT)}$ subscribers of a platform are segregated into three categories:
- Kid,
- Elder,
- Others.
Some of the subscribers used one app and the others used multiple apps to access the platform. The figure below shows the percentage of the total number of subscribers in $2023$ and $2024$ who belong to the 'Kid' and 'Elder' categories.
The following additional facts are known about the numbers of subscribers.
- The total number of subscribers increased by $10\%$ from $2023$ to $2024$.
- In $2024$, $1 / 2$ of the subscribers from the 'Kid' category and $2 / 3$ of the subscribers from the 'Elder' category subscribers use one app.
- In $2023$, the number of subscribers from the 'Kid' category who used multiple apps was the same as the number of subscribers from the 'Elder' category who used one app.
- $10,000$ subscribers from the 'Kid' category used one app and $15,000$ subscribers from the 'Elder' category used multiple apps in $2023$.
What was the percentage increase in the number of subscribers in the 'Elder' category from $2023$ to $2024$?
- $40 \%$
- $50 \%$
- $60 \%$
- $65 \%$